DE3677473D1 - Phasenumtastmodulator 22n-qam und, insbesondere 4-psk-modulator. - Google Patents

Phasenumtastmodulator 22n-qam und, insbesondere 4-psk-modulator.

Info

Publication number
DE3677473D1
DE3677473D1 DE8686460017T DE3677473T DE3677473D1 DE 3677473 D1 DE3677473 D1 DE 3677473D1 DE 8686460017 T DE8686460017 T DE 8686460017T DE 3677473 T DE3677473 T DE 3677473T DE 3677473 D1 DE3677473 D1 DE 3677473D1
Authority
DE
Germany
Prior art keywords
modulator
qam
phase shift
psk
psk modulator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE8686460017T
Other languages
English (en)
Inventor
Georges Verdot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of DE3677473D1 publication Critical patent/DE3677473D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • H04L27/2057—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases with a separate carrier for each phase state
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/362—Modulation using more than one carrier, e.g. with quadrature carriers, separately amplitude modulated

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
DE8686460017T 1985-10-28 1986-09-12 Phasenumtastmodulator 22n-qam und, insbesondere 4-psk-modulator. Expired - Lifetime DE3677473D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8516088A FR2589298B1 (fr) 1985-10-28 1985-10-28 Modulateur par deplacement de phase maq 22n et, en particulier, modulateur mdp4

Publications (1)

Publication Number Publication Date
DE3677473D1 true DE3677473D1 (de) 1991-03-14

Family

ID=9324336

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686460017T Expired - Lifetime DE3677473D1 (de) 1985-10-28 1986-09-12 Phasenumtastmodulator 22n-qam und, insbesondere 4-psk-modulator.

Country Status (3)

Country Link
EP (1) EP0225269B1 (de)
DE (1) DE3677473D1 (de)
FR (1) FR2589298B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2622376B1 (fr) * 1987-10-21 1990-01-26 Verdot Georges Modulateur par deplacement de phase a quatre etats, notamment pour modulation d'amplitude a deux porteuses en quadrature a grand nombre d'etats
JP2001041117A (ja) * 1999-07-27 2001-02-13 Ngk Insulators Ltd 液滴噴霧装置及びその製造方法
US10378296B2 (en) 2014-10-23 2019-08-13 Halliburton Energy Services, Inc. Sealed downhole equipment and method for fabricating the equipment

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2048057C1 (de) * 1970-09-30 1977-11-10 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren zur Erzeugung einer phasensprungmodulierten elektrischen Schwingung
JPS5125303B1 (de) * 1971-02-10 1976-07-30
US4206423A (en) * 1978-10-03 1980-06-03 Rca Corporation Digitized phase modulating means
FR2469062B1 (fr) * 1979-10-31 1987-05-07 Bailly Roland Modulateur par deplacement de phase a quatre etats
FR2472876A1 (fr) * 1979-12-31 1981-07-03 Bic Jean Claude Modulateur-demodulateur pour transmission en double modulation d'amplitude a quatre niveaux sur porteuses en quadrature

Also Published As

Publication number Publication date
EP0225269A1 (de) 1987-06-10
FR2589298A1 (fr) 1987-04-30
FR2589298B1 (fr) 1987-11-20
EP0225269B1 (de) 1991-02-06

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Legal Events

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8364 No opposition during term of opposition
8330 Complete disclaimer